/**
 * Application Stylesheet for Tourney Organizer
 * Provides layout for the top/sidebar navigation shell, dynamic center panel,
 * Create Round View (player roster, active/inactive controls), and Dashboard View.
 */

:root {
    --bg-app: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-elevated: #263449;
    --bg-input: #0b1120;
    --border-subtle: #334155;
    --border-focus: #6366f1;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-primary: #6366f1;
    --accent-primary-hover: #4f46e5;
    --accent-success: #10b981;
    --accent-success-bg: rgba(16, 185, 129, 0.14);
    --accent-warning: #f59e0b;
    --accent-warning-bg: rgba(245, 158, 11, 0.14);
    --accent-danger: #ef4444;
    --accent-danger-bg: rgba(239, 68, 68, 0.15);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.35);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    background-color: var(--bg-app);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

/* App Shell & Navigation */
.app-shell {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.65rem;
    background: rgba(30, 41, 59, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 50;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--accent-primary), #8b5cf6);
    color: #fff;
    font-size: 1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.nav-btn {
    appearance: none;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    padding: 0.45rem 0.75rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
}

.nav-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-btn.active {
    color: #ffffff;
    background: var(--accent-primary);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.35);
}

/* Dynamic Center Panel */
.center-panel {
    flex: 1;
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0.65rem 0.45rem 2rem;
}

.view-container {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.view-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-subtle);
}

.eyebrow-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #818cf8;
    margin-bottom: 0.35rem;
}

.view-title {
    margin: 0 0 0.4rem 0;
    font-size: 1.85rem;
    font-weight: 800;
    letter-spacing: -0.025em;
}

.view-subtitle {
    margin: 0;
    color: var(--text-secondary);
    max-width: 680px;
    font-size: 0.95rem;
}

/* Header Stats Pills */
.header-stats {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.stat-pill {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0.65rem 1rem;
    min-width: 125px;
    display: flex;
    flex-direction: column;
}

.stat-pill-active {
    border-color: rgba(16, 185, 129, 0.4);
    background: linear-gradient(180deg, rgba(16, 185, 129, 0.08), var(--bg-surface));
}

.stat-pill-inactive {
    border-color: rgba(245, 158, 11, 0.35);
    background: linear-gradient(180deg, rgba(245, 158, 11, 0.06), var(--bg-surface));
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.stat-value {
    font-size: 1.4rem;
    font-weight: 800;
    margin-top: 0.1rem;
}

.stat-pill-active .stat-value {
    color: var(--accent-success);
}

.stat-pill-inactive .stat-value {
    color: var(--accent-warning);
}

/* Create Round Layout */
.create-round-view {
    width: 100%;
}

.create-round-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.panel-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    box-shadow: var(--shadow-card);
}

.card-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border-subtle);
}

.card-header h2 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
}

.card-helper {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Forms & Inputs */
.add-player-form {
    margin-bottom: 0.75rem;
}

.input-label {
    display: block;
    font-size: 0.86rem;
    font-weight: 600;
    margin-bottom: 0.45rem;
    color: var(--text-primary);
}

.label-hint {
    font-weight: 400;
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-left: 0.25rem;
}

.add-player-input-row {
    display: flex;
    gap: 0.5rem;
}

.text-input,
.search-input {
    width: 100%;
    padding: 0.6rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.text-input:focus,
.search-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.22);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    padding: 0.6rem 0.95rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s ease;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent-primary);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-primary-hover);
}

.btn-accent {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    font-size: 1rem;
    padding: 0.75rem 1rem;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-accent:hover:not(:disabled) {
    filter: brightness(1.07);
}

.btn-secondary {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
    border-color: var(--border-subtle);
}

.btn-secondary:hover:not(:disabled) {
    background: #334155;
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    border-color: var(--border-subtle);
}

.btn-ghost:hover:not(:disabled) {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.09);
}

.btn-sm {
    padding: 0.35rem 0.6rem;
    font-size: 0.78rem;
}

.btn-block {
    width: 100%;
}

.btn-outline-warning {
    background: var(--accent-warning-bg);
    color: #fbbf24;
    border-color: rgba(245, 158, 11, 0.4);
}

.btn-outline-warning:hover:not(:disabled) {
    background: rgba(245, 158, 11, 0.25);
}

.btn-outline-success {
    background: var(--accent-success-bg);
    color: #34d399;
    border-color: rgba(16, 185, 129, 0.4);
}

.btn-outline-success:hover:not(:disabled) {
    background: rgba(16, 185, 129, 0.25);
}

.btn-icon {
    appearance: none;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    font-size: 1.25rem;
    line-height: 1;
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.btn-icon:hover {
    color: var(--accent-danger);
    background: var(--accent-danger-bg);
}

/* Roster Toolbar */
.roster-toolbar {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    padding: 0.5rem;
    background: rgba(15, 23, 42, 0.55);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
}

.filter-tabs {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.filter-tab {
    appearance: none;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.32rem 0.6rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
}

.filter-tab:hover {
    color: var(--text-primary);
}

.filter-tab.active {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
    border-color: var(--border-subtle);
}

.toolbar-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.45rem;
    flex-wrap: wrap;
}

.toolbar-actions .search-input {
    flex: 1;
    min-width: 120px;
    padding: 0.38rem 0.65rem;
    font-size: 0.85rem;
}

.bulk-buttons {
    display: flex;
    gap: 0.35rem;
}

/* Saved Player Roster List */
.player-roster-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    max-height: 520px;
    overflow-y: auto;
}

.player-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.65rem;
    padding: 0.55rem 0.7rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-subtle);
    background: var(--bg-surface-elevated);
    transition: all 0.15s ease;
}

.player-row-active {
    border-left: 4px solid var(--accent-success);
}

.player-row-inactive {
    border-left: 4px solid var(--accent-warning);
    background: rgba(15, 23, 42, 0.65);
    opacity: 0.82;
}

.player-row-main {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 0;
}

.player-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.player-name-line {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    flex-wrap: wrap;
}

.player-name {
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--text-primary);
    word-break: break-word;
}

.player-row-inactive .player-name {
    text-decoration: line-through;
    color: var(--text-secondary);
}

.player-meta {
    font-size: 0.76rem;
    color: var(--text-secondary);
}

.player-row-actions {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    flex-shrink: 0;
}

/* Status Badges */
.status-badge,
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.18rem 0.55rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.badge-active,
.badge-success {
    background: var(--accent-success-bg);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.35);
}

.badge-inactive {
    background: var(--accent-warning-bg);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.35);
}

/* Toggle Switch Control */
.status-switch {
    position: relative;
    display: inline-block;
    width: 42px;
    height: 24px;
    flex-shrink: 0;
    cursor: pointer;
}

.status-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-slider {
    position: absolute;
    inset: 0;
    background-color: #475569;
    border-radius: 999px;
    transition: 0.2s;
}

.switch-slider::before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: #ffffff;
    border-radius: 50%;
    transition: 0.2s;
}

.status-switch input:checked + .switch-slider {
    background-color: var(--accent-success);
}

.status-switch input:checked + .switch-slider::before {
    transform: translateX(18px);
}

/* Round Setup & Preview Box */
.form-group {
    margin-bottom: 1.15rem;
}

.round-preview-box {
    background: rgba(15, 23, 42, 0.65);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1.25rem;
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.preview-chips-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    min-height: 36px;
}

.player-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.38rem;
    padding: 0.28rem 0.65rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chip-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent-success);
}

.empty-chips-note {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-style: italic;
}

.preview-footer {
    margin-top: 0.8rem;
    padding-top: 0.65rem;
    border-top: 1px dashed var(--border-subtle);
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.submit-helper {
    margin: 0.6rem 0 0;
    font-size: 0.8rem;
    text-align: center;
}

.helper-warning {
    color: #fbbf24;
}

.helper-ready {
    color: #34d399;
}

/* Created Round Result & Pairings */
.created-round-banner {
    margin-top: 1.5rem;
    padding: 1.15rem;
    border-radius: var(--radius-md);
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.35);
}

.banner-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.banner-header h3 {
    margin: 0.3rem 0 0;
    font-size: 1.1rem;
}

.banner-meta {
    margin: 0.45rem 0 0.85rem;
    font-size: 0.83rem;
    color: var(--text-secondary);
}

.pairings-list,
.pairings-grid {
    display: grid;
    gap: 0.55rem;
}

.pairing-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.55rem 0.75rem;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
}

.pairing-table {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #818cf8;
    min-width: 64px;
}

.pairing-versus {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.45rem;
    width: 100%;
}

.pairing-player {
    font-weight: 600;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pairing-player-left {
    text-align: left;
}

.pairing-player-right {
    text-align: right;
}

.score-select {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 0.28rem 0.4rem;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
}

.score-select:focus {
    outline: none;
    border-color: var(--border-focus);
}

.vs-divider {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 700;
    flex-shrink: 0;
}

.bye-tag {
    color: #fbbf24;
    font-size: 0.8rem;
    font-weight: 700;
}

/* Dashboard / Rounds View */
.rounds-cards-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.round-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 1rem;
}

.round-number-badge {
    font-size: 0.74rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #818cf8;
}

.round-item-title {
    margin: 0.15rem 0 0;
    font-size: 1.15rem;
}

.round-item-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.round-timestamp {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.round-item-body {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 1.25rem;
}

@media (max-width: 768px) {
    .round-item-body {
        grid-template-columns: 1fr;
    }
}

.round-section-title {
    margin: 0 0 0.6rem;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

/* Empty, Loading, and Error States */
.empty-roster-state,
.loading-state,
.error-state {
    text-align: center;
    padding: 2.5rem 1.25rem;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

.empty-roster-state h3 {
    margin: 0 0 0.35rem;
    color: var(--text-primary);
}

.empty-roster-state p {
    margin: 0 auto 1.1rem;
    max-width: 440px;
    font-size: 0.9rem;
}

.error-state {
    color: #f87171;
    background: var(--accent-danger-bg);
    border-radius: var(--radius-md);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 1000;
    pointer-events: none;
}

.toast {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-left: 4px solid var(--accent-primary);
    padding: 0.75rem 1.1rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card);
    font-size: 0.88rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.toast-visible {
    opacity: 1;
    transform: translateY(0);
}

.toast-success {
    border-left-color: var(--accent-success);
}

.toast-error {
    border-left-color: var(--accent-danger);
}